大容量、中长时间尺度重力储能技术是新能源消纳和电力系统调峰的重要手段。根据MW级固体重力储能系统的运行特性要求及多重物切换导致功率间歇波动的问题，设计了固体重力储能系统并提出多机协同系统运行策略。首先分析了竖井式重力储能系统的结构、运行特性和储能特性，确定主要电气设备及负载类型，并建立其数学模型；在此基础上，构建重力储能电机并网仿真系统，提出了变频电辅助与变负载的机械辅助的两种软起动方式，并提出了发电电动单机控制及线性变频调速多机协同运行策略。最后基于MATLAB/Simulink平台仿真验证了所设计MW级重力储能系统及运行控制策略的可行性和有效性。

Large capacity, medium and long time scale gravity energy storage technology is an important means of new energy consumption and power system peak shaving. According to the operation characteristics of MW-level solid gravity energy storage system and the problem of intermittent power fluctuation caused by multi-weight switching, a solid gravity energy storage system is designed and a multi-machine coordinated system operation strategy is proposed. Firstly, the structure, operation characteristics and energy storage characteristics of the shaft-type gravity energy storage system are analyzed, the main electrical equipment and load types are determined, and its mathematical model is established. On this basis, the grid-connected simulation system of gravity energy storage motor is constructed, and two soft start modes of variable frequency electric auxiliary and variable load mechanical auxiliary are proposed. The single-machine control of power generation electric and the multi-machine coordinated operation strategy of linear variable frequency speed regulation are proposed. Finally, based on MATLAB / Simulink platform simulation, the feasibility and effectiveness of the designed MW-level gravity energy storage system and operation control strategy are verified.